# College Algebra Concepts Through Functions

**by**Sullivan, Michael, III; Sullivan, Michael

### 9780321641076

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## Summary

## Author Biography

**Mike Sullivan** is Professor of Mathematics at Chicago State University, having taught there for more than 30 years. He received his PhD in mathematics from Illinois Institute of Technology. He is a native of Chicago’s South Side and currently resides in Oak Lawn, Illinois. Mike has four children; the two oldest have degrees in mathematics and assisted in proofing, checking examples and exercises, and writing solutions manuals for this project. His son, Mike Sullivan, III, co-authored the Sullivan *Graphing with Data Analysis* series as well as this series. Mike has authored or co-authored more than ten books. He owns a travel agency, and splits his time between a condo in Naples, Florida and a home in Oak Lawn, where Mike enjoys gardening.

**Mike Sullivan, III**is a professor of mathematics at Joliet Junior College. He holds graduate degrees from DePaul University in both mathematics and economics. Mike is an author or co-author on more than 20 books, including a statistics book and a developmental mathematics series. Mike is the father of three children and an avid golfer who tries to spend as much of his limited free time as possible on the golf course.

## Table of Contents

**Foundations: A Prelude to Functions**

F.1 The Distance and Midpoint Formulas

F.2 Graphs of Equations in Two Variables; Intercepts; Symmetry

F.3 Lines

F.4 Circles

**1. Functions and Their Graphs**

1.1 Functions

1.2 The Graph of a Function

1.3 Properties of Functions

1.4 Library of Functions; Piecewise-defined Functions

1.5 Graphing Techniques: Transformations

1.6 Mathematical Models: Constructing Functions

1.7 Building Mathematical Models Using Variation

Chapter Review

Chapter Test

Chapter Projects

**2. Linear and Quadratic Functions**

2.1 Properties of Linear Functions and Linear Models

2.2 Building Linear Models from Data

2.3 Quadratic Functions and Their Zeros

2.4 Properties of Quadratic Functions

2.5 Inequalities Involving Quadratic Functions

2.6 Building Quadratic Models from Verbal Descriptions and from Data

2.7 Complex Zeros of a Quadratic Function

2.8 Equations and Inequalities Involving the Absolute Value Function

Chapter Review

Chapter Test

Chapter Projects

Cumulative Review

**3. Polynomial and Rational Functions**

3.1 Polynomial Functions and Models

3.2 Properties of Rational Functions

3.3 The Graph of a Rational Function

3.4 Polynomial and Rational Inequalities

3.5 The Real Zeros of a Polynomial Function

3.6 Complex Zeros; Fundamental Theorem of Algebra

Chapter Review

Chapter Test

Chapter Projects

Cumulative Review

**4. Exponential and Logarithmic Functions**

4.1 Composite Functions

4.2 One-to-One Functions; Inverse Functions

4.3 Exponential Functions

4.4 Logarithmic Functions

4.5 Properties of Logarithms

4.6 Logarithmic and Exponential Equations

4.7 Compound Interest

4.8 Exponential Growth and Decay; Newton’s Law; Logistic Growth and Decay

4.9 Building Exponential, Logarithmic, and Logistic Functions from Data

Chapter Review

Chapter Test

Chapter Projects

Cumulative Review

**5.** **Conics**

5.1 Conics

5.2 The Parabola

5.3 The Ellipse

5.4 The Hyperbola

Chapter Review

Chapter Test

Chapter Projects

Cumulative Review

**6.** **Systems** **of** **Equations** **and** **Inequalities**

6.1 Systems of Linear Equations: Substitution and Elimination

6.2 Systems of Linear Equations: Matrices

6.3 Systems of Linear Equations: Determinants

6.4 Matrix Algebra

6.5 Partial Fraction Decomposition

6.6 Systems of Nonlinear Equations

6.7 Systems of Inequalities

6.8 Linear Programming

Chapter Review

Chapter Test

Chapter Projects

Cumulative Review

**7.** **Sequences;** **Induction;** **the** **Binomial** **Theorem**

7.1 Sequences

7.2 Arithmetic Sequences

7.3 Geometric Sequences; Geometric Series

7.4 Mathematical Induction

7.5 The Binomial Theorem

Chapter Review

Chapter Test

Chapter Projects

Cumulative Review

**8.** **Counting** **and** **Probability**

8.1 Counting

8.2 Permutations and Combinations

8.3 Probability

Chapter Review

Chapter Test

Chapter Projects

Cumulative Review

**Appendix A. Review**

A.1 Algebra Essentials

A.2 Geometry Essentials

A.3 Polynomials

A.4 Factoring Polynomials

A.5 Synthetic Division

A.6 Rational Expressions

A.7 *n*th Roots; Rational Exponents

A.8 Solving Equations

A.9 Problem Solving: Interest, Mixture, Uniform Motion, Constant Rate Jobs

A.10 Interval Notation; Solving Inequalities

A.11 Complex Numbers

**Appendix B. Graphing Utilities**

B.1 The Viewing Rectangle

B.2 Using a Graphing Utility to Graph Equations

B.3 Using a Graphing Utility to Locate Intercepts and Check for Symmetry

B.4 Using a Graphing Utility to Solve Equations

B.5 Square Screens

B.6 Using a Graphing Utility to Graph Inequalities

B.7 Using a Graphing Utility to Solve Systems of Linear Equations

B.8 Using a Graphing Utility to Graph a Polar Equation

B.9 Using a Graphing Utility to Graph Parametric Equations

Answers

Index